A glove box with replaceable gas purification column

Abstract

The present invention relates to the technical field of glove boxes, and specifically to a glove box with a replaceable gas purification column, comprising a box body, a purification structure provided on the box body, a dripping structure provided on the purification structure, a replacement structure provided on the box body, a limiting structure provided on the replacement structure, a balance structure provided on the box body, and a fixed structure provided on the balance structure; regenerated tail gas is purified by the purification structure to avoid direct discharge of the regenerated tail gas, which causes air pollution to the outside world and affects human health; an alkaline reagent can be added to a solution through the dripping structure to prepare the solution into an alkaline solution, so that the acidic gas discharged by regeneration reacts with the alkaline solution to purify the gas; the purification column body can be taken out through the replacement structure to replace the purification material in the purification column body, and the top of the purification column body can be conveniently sealed through the limiting structure.

Description

Technical Field

[0001] The invention belongs to the technical field of glove boxes, in particular to a glove box with a replaceable gas purification column. Background Art

[0002] A vacuum glove box is a laboratory device that fills a box with high-purity inert gas and circulates and filters out the active substances in it. Glove boxes are widely used in high-tech research fields and production processes such as medicine, biology, chemistry and chemical engineering, nuclear energy, lithium batteries, and mechanical processing.

[0003] After long-term use of the vacuum glove box, the molecular sieve of the purification column inside it will gradually become saturated and lose the ability to adsorb water. In order to avoid affecting the purification function of the purification column, it is usually necessary to use regeneration means to directly regenerate the purification material inside the purification column, or replace the entire purification column. When the purification material is regenerated, the acidic gas absorbed by the purification column during the purification process will be discharged along with the regenerated exhaust gas, causing pollution to the external environment. If the entire purification column is replaced, the maintenance cost is high, and when you put your hand into the glove box for operation, the gas pressure in the glove box increases, and the inert gas in the box will be discharged. When you take your hand out, the pressure in the box decreases, and the inert gas in the cylinder will be replenished to maintain pressure balance, causing waste. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a glove box with a replaceable gas purification column.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A glove box with a replaceable gas purification column, comprising a box body, a purification structure provided on the box body, a dripping structure provided on the purification structure, a replacement structure provided on the box body, a limiting structure provided on the replacement structure, a balance structure provided on the box body, and a fixing structure provided on the balance structure;

[0007] The purification structure includes an exhaust pipe, the box body is provided with an exhaust pipe, a one-way valve and an air storage sleeve are fixedly connected to the exhaust pipe, a sealing ring and a support rod are fixedly connected to the inner wall of the exhaust pipe, a sliding rod is slidably connected to the support rod, a sealing block is fixedly connected to the sliding rod, the sealing block and the sealing ring are slidably connected, a first spring is fixedly connected between the sliding rod and the support rod, one end of the exhaust pipe is fixedly connected to an absorption box, and a diaphragm is fixedly connected to the absorption box.

[0008] Specifically, the dripping structure includes a fixed plate, a fixed plate and a sealing plate are fixedly connected in the absorption box, an alkaline reagent is provided between the fixed plate and the sealing plate, a dropper is fixedly connected between the fixed plate and the sealing plate, a one-way valve is provided on the dropper, a fixed block is fixedly connected to the fixed plate, a pressure block is slidably connected to the fixed plate, a fixed rod is fixedly connected to the pressure block, the fixed rod passes through the fixed block and is fixedly connected to a connecting plate, a second spring is fixedly connected between the connecting plate and the fixed block, a pull rope is fixedly connected to the fixed block, and the pull rope is fixedly connected to the connecting plate.

[0009] Specifically, the fixed block and the pressing block are both fixedly connected with a soft cushion, the pressing block is fixedly connected with a limiting rod, and the limiting rod is slidably connected to the fixed plate.

[0010] Specifically, the replacement structure includes a purification column body, the purification column body is installed in the box, the top of the purification column body is detachably connected to a cover plate, the cover plate is fixedly connected to a connecting pipe, the connecting pipe is detachably connected to a sleeve, the sleeve is fixedly connected to the box, and the outside of the connecting pipe is detachably connected to a clamp.

[0011] Specifically, a clamping block is fixedly connected to the clamping hoop, a clamping groove is provided on the connecting pipe, and the clamping block and the clamping groove are engaged with each other.

[0012] Specifically, a rubber ring is fixedly connected to the connecting pipe, and a groove is provided on the sleeve.

[0013] Specifically, the limiting structure includes a limiting column, the limiting column is fixedly connected to the cover plate, a limiting groove is provided on the purification column body, and a first sealing ring is fixedly connected to the top of the purification column body.

[0014] Specifically, a buckle is fixedly connected to a side edge of the cover plate, and a clamping ring is fixedly connected to a side edge of the purification column body.

[0015] Specifically, the balancing structure includes a connecting port, the box body is provided with a connecting port, an airbag is detachably connected to the connecting port, a connecting ring is fixedly connected to the outside of the airbag, and a second sealing ring is fixedly connected to the outside of the connecting port.

[0016] Specifically, the fixing structure includes a protrusion, the connecting ring is fixedly connected with the protrusion, the box body is provided with a slide groove, the box body is provided with an annular groove, and the protrusion and the slide groove are slidably connected with the annular groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The glove box with a replaceable gas purification column described in the present invention has a purification structure on the box body, and a dripping structure on the purification structure. The regenerated tail gas is purified by the purification structure to avoid direct discharge of the regenerated tail gas, which causes air pollution to the outside world and affects human health. The alkaline reagent can be added to the solution through the dripping structure to prepare the solution into an alkaline solution, so that the acidic gas discharged by regeneration reacts with the alkaline solution to purify the gas, that is, when the box body is regenerated, the regenerated tail gas enters the exhaust pipe, and the one-way valve on the exhaust pipe can prevent the gas from flowing back. The gas gathers in the gas storage sleeve along the exhaust pipe. When it gathers to a certain amount, it pushes the sealing block to squeeze the first spring, driving the sliding rod to slide downward on the support rod, so that the sealing block slides out of the sealing ring, and the acidic gas can flow out along the sealing ring. The sealing ring is discharged and enters the absorption box through the exhaust pipe to react with the alkaline solution in the absorption box. The diaphragm in the absorption box can prevent the solution in the absorption box from entering the exhaust pipe, and the gas can be discharged into the absorption box at the same time. When the gas pushes the sealing block to squeeze the first spring, the slide bar slides downward to pull the pull rope, driving the connecting plate fixedly connected to the pull rope to slide, so that the connecting plate stretches the second spring, driving the fixed rod to slide through the fixed block, thereby driving the pressing block to slide toward the fixed block, compressing the dropper between the fixed plate and the sealing plate, so that the alkaline reagent in the dropper automatically drips into the solution. When the gas enters the absorption box, the pressing block is reset by the second spring, and the alkaline reagent between the fixed plate and the sealing plate can enter the dropper through the one-way valve on the dropper, so that the alkaline reagent can be continuously added to the solution.

[0019] (2) The present invention discloses a glove box with a replaceable gas purification column, wherein a replacement structure is provided on the box body, and a limiting structure is provided on the replacement structure. The purification column body can be taken out through the replacement structure to replace the purification material in the purification column body. The limiting structure can be used to seal the top of the purification column body, that is, after the purification material in the purification column body is saturated with adsorption, the bolt on the clamp can be rotated so that the clamp block on the clamp no longer engages with the clamp groove on the connecting pipe, the connecting pipe is removed from the bottom end of the sleeve, and the cover plate on the top end of the purification column body is opened to replace the purification material in the purification column body. By fixing a rubber ring on the connecting pipe and fixing a groove on the sleeve, the connection between the connecting pipe and the sleeve is conveniently sealed to avoid gas leakage. After the purification material in the purification column body is replaced, the limiting column on the cover plate is engaged with the limiting groove on the purification column body, and the clamping ring on the purification column body is engaged with the buckle on the cover plate, the cover plate is fixed, and the connection is sealed by the first sealing ring on the purification column body.

[0020] (3) The glove box with a replaceable gas purification column described in the present invention has a balancing structure on the box body, and a fixed structure on the balancing structure. The balancing structure can keep the gas pressure in the box body balanced to avoid waste caused by repeated discharge and replenishment of gas. The balancing structure can be replaced by the fixed structure, that is, the airbag is installed on the box body through the connecting ring on its outer side and the connecting port on the box body. When the operator puts his hand into the box body for experiment, the inert gas can enter the airbag to avoid the inert gas from being discharged. When the operator takes his hand out, the inert gas in the airbag will enter the box body again, thereby maintaining the pressure inside and outside the box body and avoiding waste caused by repeated discharge and replenishment of gas. The second sealing ring at the connecting port can avoid gas leakage. When the airbag is damaged, the connecting ring on the airbag can be rotated to make the protrusion on the connecting ring slide in the annular groove. When the protrusion slides to match the position of the slide groove, the connecting ring can be pulled upward to make the protrusion slide in the slide groove. The connecting ring is taken out of the box body and the airbag is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a glove box with a replaceable gas purification column provided by the present invention;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0024] Figure 3 It is a schematic diagram of the connection structure between the exhaust pipe and the air storage sleeve of the present invention;

[0025] Figure 4 for Figure 3 An enlarged schematic diagram of the structure of part B is shown;

[0026] Figure 5 for Figure 3 An enlarged schematic diagram of the C-section structure is shown;

[0027] Figure 6 It is a schematic diagram of the connection structure between the purification column body and the cover plate of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection structure between the card block and the card slot of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection structure of the airbag and the connecting ring of the present invention.

[0030] In the figure: 1. Box; 2. Purification structure; 201. Exhaust pipe; 202. Air storage sleeve; 203. Sealing ring; 204. Sealing block; 205. Sliding rod; 206. Support rod; 207. First spring; 208. Absorption box; 209. Diaphragm; 3. Dropping structure; 301. Fixed plate; 302. Sealing plate; 303. Dropper; 304. Fixed block; 305. Pressing block; 306. Fixed rod; 307. Connecting plate; 308. Second spring; 309. Draw rope; 310. Cushion; 311. Limiting rod; 4. Replacement structure ;401, purification column body;402, cover plate;403, connecting pipe;404, clamp;405, block;406, slot;407, rubber ring;408, groove;409, sleeve;5, limiting structure;501, limiting column;502, limiting slot;503, first sealing ring;504, buckle;505, clamping ring;6, balancing structure;601, connecting port;602, air bag;603, connecting ring;604, second sealing ring;7, fixing structure;701, protrusion;702, slide groove;703, annular groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figure 1-Figure 8 As shown, an embodiment of the present invention provides a glove box with a replaceable gas purification column, including a box body 1, a purification structure 2 is provided on the box body 1, a dripping structure 3 is provided on the purification structure 2, a replacement structure 4 is provided on the box body 1, a limiting structure 5 is provided on the replacement structure 4, a balance structure 6 is provided on the box body 1, and a fixing structure 7 is provided on the balance structure 6.

[0033] like Figure 1-Figure 8As shown, the purification structure 2 includes an exhaust pipe 201, an exhaust pipe 201 is provided on the box body 1, a one-way valve and an air storage sleeve 202 are fixedly connected to the exhaust pipe 201, a sealing ring 203 and a support rod 206 are fixedly connected to the inner wall of the exhaust pipe 201, a sliding rod 205 is slidably connected to the support rod 206, a sealing block 204 is fixedly connected to the sliding rod 205, and the sealing block 204 and the sealing ring 203 are slidably connected. A first spring 207 is fixedly connected between the sliding rod 205 and the support rod 206, an absorption box 208 is fixedly connected to one end of the exhaust pipe 201, and a diaphragm 209 is fixedly connected to the absorption box 208. In this embodiment, when the box body 1 is regenerated, the regenerated exhaust gas enters the exhaust pipe 201. The one-way valve on the exhaust pipe 201 can prevent the gas from flowing back. The gas gathers in the gas storage sleeve 202 along the exhaust pipe 201. When it gathers to a certain amount, it pushes the sealing block 204 to squeeze the first spring 207, driving the sliding rod 205 to slide downward on the support rod 206, so that the sealing block 204 slides out of the sealing ring 203. The acidic gas can be discharged along the sealing ring 203 and enter the absorption box 208 through the exhaust pipe 201 to react with the alkaline solution in the absorption box 208. The diaphragm 209 in the absorption box 208 can prevent the solution in the absorption box 208 from entering the exhaust pipe 201, and at the same time, the gas can be discharged into the absorption box 208.

[0034] like Figure 1-Figure 8As shown, the dripping structure 3 includes a fixed plate 301, a fixed plate 301 and a sealing plate 302 are fixedly connected in the absorption box 208, an alkaline reagent is provided between the fixed plate 301 and the sealing plate 302, and a dropper 303 is fixedly connected between the fixed plate 301 and the sealing plate 302. A one-way valve is provided on the dropper 303, a fixed block 304 is fixedly connected to the fixed plate 301, a pressing block 305 is slidably connected to the fixed plate 301, a fixed rod 306 is fixedly connected to the pressing block 305, the fixed rod 306 passes through the fixed block 304 and is fixedly connected to a connecting plate 307, and a second spring 308 is fixedly connected between the connecting plate 307 and the fixed block 304. A pull rope 309 is fixedly connected to the fixed block 304, and the pull rope 309 is fixedly connected to the connecting plate 307. A cushion 310 is fixedly connected to the fixed block 304 and the pressing block 305. A limiting rod 311 is fixedly connected to the pressing block 305, and the limiting rod 311 is slidably connected to the fixed plate 301. In this embodiment, when the gas pushes the sealing block 204 to squeeze the first spring 207, the sliding rod 205 slides downward to pull the pull rope 309, driving the connecting plate 307 fixedly connected to the pull rope 309 to slide, so that the connecting plate 307 stretches the second spring 308, driving the fixing rod 306 to slide through the fixing block 304, thereby driving the pressing block 305 to slide toward the fixing block 304 through the limiting rod 311, compressing the dropper 303 between the fixing plate 301 and the sealing plate 302, so that the alkaline reagent in the dropper 303 automatically drips into the solution, and the soft pad 310 on the pressing block 305 and the fixing block 304 can protect the dropper 303 when squeezing the dropper 303. When the gathered gas is passed into the absorption box 208, the pressing block 305 is reset by the second spring 308, and the alkaline reagent between the fixing plate 301 and the sealing plate 302 can enter the dropper 303 through the one-way valve on the dropper 303, so as to facilitate the continuous addition of the alkaline reagent to the solution.

[0035] like Figure 1-Figure 8As shown, the replacement structure 4 includes a purification column body 401, the purification column body 401 is installed in the box 1, the top of the purification column body 401 is detachably connected to a cover plate 402, the cover plate 402 is fixedly connected to a connecting pipe 403, the connecting pipe 403 is detachably connected to a sleeve 409, and the sleeve 409 is fixedly connected to the box 1. A clamp 404 is detachably connected to the outside of the connecting pipe 403, a clamp block 405 is fixedly connected to the clamp 404, a clamping groove 406 is provided on the connecting pipe 403, and the clamping block 405 and the clamping groove 406 are engaged. A rubber ring 407 is fixedly connected to the connecting pipe 403, and a groove 408 is provided on the sleeve 409. After the purification material in the purification column body 401 is saturated with adsorption, the bolt on the clamp 404 can be rotated so that the block 405 on the clamp 404 no longer engages with the groove 406 on the connecting pipe 403, the connecting pipe 403 is removed from the bottom end of the sleeve 409, and the cover plate 402 on the top of the purification column body 401 is opened to replace the purification material in the purification column body 401. By fixing a rubber ring 407 on the connecting pipe 403 and a groove 408 on the sleeve 409, it is convenient to seal the connection between the connecting pipe 403 and the sleeve 409 to avoid gas leakage.

[0036] like Figure 1-Figure 8 As shown, the limiting structure 5 includes a limiting column 501, a limiting column 501 is fixedly connected to the cover plate 402, a limiting groove 502 is provided on the purification column body 401, and a first sealing ring 503 is fixedly connected to the top of the purification column body 401. A buckle 504 is fixedly connected to the side of the cover plate 402, and a snap ring 505 is fixedly connected to the side of the purification column body 401. In this embodiment, after the purification material in the purification column body 401 is replaced, the limiting column 501 on the cover plate 402 is engaged with the limiting groove 502 on the purification column body 401, and the snap ring 505 on the purification column body 401 is engaged with the buckle 504 on the cover plate 402, the cover plate 402 is fixed, and the connection is sealed by the first sealing ring 503 on the purification column body 401.

[0037] like Figure 1-Figure 8 As shown, the balance structure 6 includes a connection port 601, the box body 1 is provided with the connection port 601, the connection port 601 is detachably connected to the airbag 602, the outer side of the airbag 602 is fixedly connected to the connection ring 603, and the outer side of the connection port 601 is fixedly connected to the second sealing ring 604. In this embodiment, the airbag 602 is installed on the box body 1 through the connection ring 603 on the outer side and the connection port 601 on the box body 1. When the operator puts his hand into the box body 1 for experiment, the inert gas can enter the airbag 602 to prevent the inert gas from being discharged. When the operator takes his hand out, the inert gas in the airbag 602 will enter the box body 1 again, thereby maintaining the pressure inside and outside the box body 1, avoiding the waste caused by repeated discharge and replenishment of gas, and the second sealing ring 604 through the connection port 601 can prevent gas leakage.

[0038] like Figure 1-Figure 8 As shown, the fixing structure 7 includes a protrusion 701, the protrusion 701 is fixedly connected to the connecting ring 603, a slide groove 702 is provided on the box body 1, an annular groove 703 is provided on the box body 1, and the protrusion 701 and the slide groove 702 are slidably connected with the annular groove 703. In this embodiment, when the airbag 602 is damaged, the connecting ring 603 on the airbag 602 can be rotated to make the protrusion 701 on the connecting ring 603 slide in the annular groove 703, and when the protrusion 701 slides to the position of the slide groove 702, the connecting ring 603 can be pulled upward to make the protrusion 701 slide in the slide groove 702, and the connecting ring 603 can be taken out from the box body 1 to replace the airbag 602.

[0039] When the present invention is used, first, when the box body 1 is regenerated, the regenerated tail gas enters the exhaust pipe 201. The one-way valve on the exhaust pipe 201 can prevent the gas from flowing back. The gas gathers in the gas storage sleeve 202 along the exhaust pipe 201. When a certain amount of gas is gathered, the sealing block 204 is pushed to squeeze the first spring 207, driving the slide bar 205 to slide downward on the support rod 206, so that the sealing block 204 slides out of the sealing ring 203. The acidic gas can be discharged along the sealing ring 203 and enter the absorption box 208 through the exhaust pipe 201 to react with the alkaline solution in the absorption box 208. The diaphragm 209 in the absorption box 208 can prevent the solution in the absorption box 208 from entering the exhaust pipe 201. At the same time, the gas can be discharged into the absorption box 208. When the gas pushes the sealing ring 203, the acidic gas can be discharged from the absorption box 208. When the block 204 squeezes the first spring 207, the slide bar 205 slides downward to pull the pull rope 309, driving the connecting plate 307 fixedly connected to the pull rope 309 to slide, so that the connecting plate 307 stretches the second spring 308, driving the fixing rod 306 to slide through the fixing block 304, thereby driving the pressing block 305 to slide toward the fixing block 304 through the limiting rod 311, compressing the dropper 303 between the fixing plate 301 and the sealing plate 302, so that the alkaline reagent in the dropper 303 automatically drips into the solution, and the dropper 303 can be protected by the soft pad 310 on the pressing block 305 and the fixing block 304 when the dropper 303 is squeezed. When the accumulated gas enters the absorption box 208, the pressing block 305 is reset by the second spring 308, and the dropper 30 The one-way valve on 3 allows the alkaline reagent between the fixed plate 301 and the sealing plate 302 to enter the dropper 303, which is convenient for continuously adding the alkaline reagent to the solution. After the purification material in the purification column body 401 is saturated with adsorption, the bolt on the clamp 404 can be rotated so that the block 405 on the clamp 404 is no longer engaged with the groove 406 on the connecting pipe 403, and the connecting pipe 403 is removed from the bottom end of the sleeve 409, and the cover plate 402 at the top of the purification column body 401 is opened to replace the purification material in the purification column body 401. By fixing the rubber ring 407 on the connecting pipe 403 and fixing the groove 408 on the sleeve 409, it is convenient to seal the connection between the connecting pipe 403 and the sleeve 409 to avoid gas leakage. After the purification material in the column body 401 is replaced, the limiting column 501 on the cover plate 402 is engaged with the limiting groove 502 on the purification column body 401, and the clamping ring 505 on the purification column body 401 is engaged with the buckle 504 on the cover plate 402, the cover plate 402 is fixed, and the connection is sealed by the first sealing ring 503 on the purification column body 401, and the airbag 602 is installed on the box body 1 through the connecting ring 603 on its outer side and the connecting port 601 on the box body 1. When the operator puts his hand into the box body 1 for experiment, the inert gas can enter the airbag 602 to prevent the inert gas from being discharged. When the operator takes his hand out, the inert gas in the airbag 602 will enter the box body 1 again, thereby maintaining the pressure inside and outside the box body 1.The waste caused by repeated discharge and replenishment of gas is avoided. The second sealing ring 604 of the connection port 601 can prevent gas leakage. When the airbag 602 is damaged, the connecting ring 603 on the airbag 602 can be rotated to make the protrusion 701 on the connecting ring 603 slide in the annular groove 703. When the protrusion 701 slides to the position of the slide groove 702, the connecting ring 603 can be pulled upward to make the protrusion 701 slide in the slide groove 702, and the connecting ring 603 can be taken out of the box body 1 to replace the airbag 602.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A glove box with a replaceable gas purification column, characterized in that: It comprises a box body, a purification structure is provided on the box body, a dripping structure is provided on the purification structure, a replacement structure is provided on the box body, a limiting structure is provided on the replacement structure, a balancing structure is provided on the box body, and a fixing structure is provided on the balancing structure; The purification structure comprises an exhaust pipe, the box body is provided with an exhaust pipe, a one-way valve and an air storage sleeve are fixedly connected to the exhaust pipe, a sealing ring and a support rod are fixedly connected to the inner wall of the exhaust pipe, a sliding rod is slidably connected to the support rod, a sealing block is fixedly connected to the sliding rod, the sealing block and the sealing ring are slidably connected, a first spring is fixedly connected between the sliding rod and the support rod, one end of the exhaust pipe is fixedly connected to an absorption box, and a diaphragm is fixedly connected to the absorption box; The dripping structure comprises a fixed plate, a fixed plate and a sealing plate are fixedly connected in the absorption box, an alkaline reagent is arranged between the fixed plate and the sealing plate, a dropper is fixedly connected between the fixed plate and the sealing plate, a one-way valve is arranged on the dropper, a fixed block is fixedly connected to the fixed plate, a pressure block is slidably connected to the fixed plate, a fixed rod is fixedly connected to the pressure block, the fixed rod passes through the fixed block and is fixedly connected to a connecting plate, a second spring is fixedly connected between the connecting plate and the fixed block, a pull rope is fixedly connected to the fixed block, and the pull rope is fixedly connected to the connecting plate; The replacement structure comprises a purification column body, the purification column body is installed in the box, the top of the purification column body is detachably connected to a cover plate, the cover plate is fixedly connected to a connecting pipe, the connecting pipe is detachably connected to a sleeve, the sleeve is fixedly connected to the box, and the outer side of the connecting pipe is detachably connected to a clamp; The limiting structure includes a limiting column, the limiting column is fixedly connected to the cover plate, a limiting groove is provided on the purification column body, a first sealing ring is fixedly connected to the top of the purification column body, a buckle is fixedly connected to the side of the cover plate, and a clamping ring is fixedly connected to the side of the purification column body; The balancing structure comprises a connection port, the box body is provided with a connection port, an airbag is detachably connected to the connection port, a connection ring is fixedly connected to the outside of the airbag, and a second sealing ring is fixedly connected to the outside of the connection port; The fixing structure comprises a protrusion, the connecting ring is fixedly connected with the protrusion, the box body is provided with a sliding groove, the box body is provided with an annular groove, and the protrusion and the sliding groove are slidably connected with the annular groove.

2. A glove box with a replaceable gas purification column according to claim 1, characterized in that: The fixed block and the pressing block are both fixedly connected with a cushion, the pressing block is fixedly connected with a limiting rod, and the limiting rod is slidably connected with the fixed plate.

3. The glove box with a replaceable gas purification column according to claim 1, characterized in that: A clamping block is fixedly connected to the clamping hoop, a clamping groove is provided on the connecting pipe, and the clamping block is engaged with the clamping groove.

4. The glove box with a replaceable gas purification column according to claim 1, characterized in that: A rubber ring is fixedly connected to the connecting pipe, and a groove is provided on the sleeve.

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